What is abscisic acid?

Abscisic acid is a plant hormone that is responsible for the dormancy and inhibition of growth, including processes in plant development. When it was first discovered and tested, abscisic acid plays a role in the absocise or release of leaves or fruit of the plant. This is part of how the hormone has gained a name, although most scientists no longer believe that abscisic acid has this function. This hormone can also be produced at some times by a plant in stress that may occur in situations such as water lack. Two different compounds were isolated and at a time when they were called abscisine I and abscisine II. The latter eventually became known as abscisic acid, although his role in abscise is now considered doubtful in Best. Two other groups of scientists who were contemporary addicott also discovered these compounds at about the same time.

one of the main roles of AB acidThe Scis is a suspension of the growth and division of cells when time comes to enter the sleeping state, for example in autumn. This time of year, the hormone is produced in buds that will become fruit during the following year. Not only does it stop growing in different areas of the plant, but in some cases it causes the formation of a hard outer cover on the bud that protects it from hard winter conditions. At the end of the dormancy period, other hormones are formed that act in opposition to abscisic acid to cause renewed growth in the plant.

Both types of hormones are always present in the plant to some extent, but the state of growth of the plant determines their relative level. Abscisic acid can also be included in the game during a period of growth, as a mechanism of stress management. Specifically, it causes small pores on leaves known as stomata, close when the water is rare. This slows the speed at which water can escape from the leaves, thus retaining the life of the plant. Finally, abscisic acid can also be producedCreated by the plant in response to the injury, in which case it induces the synthesis of certain proteins that contribute to the healing of the injury.